Are my PDF files uploaded?

No. The document is opened and rewritten inside your browser. It is never sent to a server, and closing the tab discards it.

Can I use a password-protected PDF?

Unlock it first with the Unlock PDF tool, using its password. Protected files cannot be processed directly.

Any change to a signed PDF invalidates its digital signature. Treat the result as unsigned and keep the original.

There is no fixed limit. Very large documents are bounded by the memory available to your browser.

JavaScript is turned off. InspireTools processes files in your browser, so the tools need JavaScript to run.

Combine several PDF files into one, in the order you choose.